Nice find DFD and welcome back!
The first thing I would do is test it with a magnet.
If it sticks, it is doubtful that it is gold.
Your Fe Co numbers are in the gold range.
But the problem, is that Gold can be all over the place as it is an alloy (mixture of metals) for hardness and color.
Also, the shape of your find can throw the Fe Co number off, which are better suited to identify cookie cutter type objects such as coins.